package com.xxd.spring.boot.demo.lihonghai.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.xxd.spring.boot.demo.lihonghai.entity.Grade;
import org.apache.ibatis.annotations.Param;

public interface GradeMapper extends BaseMapper<Grade> {
    Grade selectById(@Param("id") Integer id);
    void  deleteById1(@Param("id") Integer id);
    void  deleteById2(@Param("id") Integer id);
}
